Added functionality to Statement that enables
executeUpdate() to store values for IDs that are
automatically generated for AUTO_INCREMENT fields.
Basically, after an executeUpdate(), look at the SQLWarnings
for warnings like "LAST_INSERTED_ID = 'some number', COMMAND
= 'your SQL query'". If you are using AUTO_INCREMENT fields
in your tables and are executing a lot of executeUpdate()s
on one Statement, be sure to clearWarnings() every so often
to save memory.